CN102928808A - Power consumer on-site electric energy meter fault remote judging method - Google Patents
Power consumer on-site electric energy meter fault remote judging method Download PDFInfo
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Abstract
The invention provides a power consumer on-site electric energy meter fault remote judging method which mainly comprises the steps of receiving the voltage and current parameter values of an electric energy meter acquired and sent by a power consumer on-site electric energy meter operating parameter acquisition system by a master station central computer in real time, analyzing and processing the voltage and current parameter values of the electric energy meter through built-in programs by the master station central computer after the reception, comparing the received real-time voltage and current parameter values with the values obtained by multiplying the rated voltage and current values of the electric energy meter by different coefficients, and judging whether the electric energy meter has voltage loss, current loss or phase loss fault according to different combinations by combining the voltage lasting time and the current lasting time. According to the method, the judgment of the electric energy meter is timely and convenient, the occurrence of electric quantity errors can be avoided to the greatest extent, the electric energy metering management level is improved and the electric quantity retroaction disputes are decreased; and by replacing the traditional manual on-site detection methods, the manpower and the material resources are saved and the economic benefits of the enterprises are improved.
Description
Technical field
The present invention relates to the fault verification method of electric power meter, be specifically related to the long-range method of judging of a kind of electrical energy meter fault to the power consumer scene.
Background technology
Electric energy meter common fault in service has decompression, defluidization and disconnected equating.In three-phase power supply system, if when no-voltage fault occurs the operating voltage of electric energy meter rated voltage 60% to 78% between the time, electric energy meter can also measure, but measures inaccurate; When the operating voltage of electric energy meter be lower than rated voltage 60% the time, electric energy meter will not measure.When electric energy meter generation open phase fault, the table meter will not measure.When the defluidization fault occured, the state of defluidization may be that normal electricity consumption causes, and also may be that improper electricity consumption causes, but all be abnormal, and when certain phase defluidization occurs, this will not measure mutually.Whether whether breaking down of the electric energy meter at power consumer scene, traditional method are to rely on manually to the scene electric energy meter to be carried out detection check and judged breaking down.This pattern has the following disadvantages at least: the one, and present electric company only carries out the user more than 315 kilovolt-amperes capacity usually because of manpower problem field-checking, and the cycle is three months to 1 year, in case pinpoint the problems often because interval time is oversize to the identification of mistake electric weight and remedy and cause difficulty; The 2nd, artificial field-checking needs the user that cooperation is provided, and exists the situation of subjectivity promise breaking electricity consumption or stealing to be difficult to find such as the user; The 3rd, even find in the artificial field-checking that metering is unusual, but because normal effective believable technical data for want of such as the time that fault is occured, the actual load between age at failure, cause the difficulty of electric quantity compensating; The 4th, there is certain one-sidedness in the data of artificial field-checking; The 5th, because the power consumer One's name is legion, the manual detection verification expends a large amount of man power and materials.
At present, along with the structure of intelligent grid, the popularization of intelligent electric meter and the development of technology, the data of electric energy meter are carried out Real-time Collection, judged to become possibility long-range whether breaking down to the data analysis judgement of collection and then to electric energy meter.Be that CN 101162264A, denomination of invention are the Chinese patent literature of " long-range check monitoring system " such as publication number, how concrete to the fault of electric power meter it has proposed by telecommunication electric power meter to be carried out verification monitoring, but propose decision method; And for example publication number is that CN 1368777A, denomination of invention are the Chinese patent literature of " remote data monitoring system for kilowatt-hour meters ", it has proposed electric energy meter is carried out the scheme of remote data acquisition, mainly solve the remote meter reading problem, but do not related to the fault verification of electric energy meter.
Summary of the invention
The objective of the invention is: overcome the deficiencies in the prior art, provide a kind of power consumer field electric energy table fault long-range decision method, operation conditions by the telemonitoring electric energy meter, in time find the operating fault of electric energy meter, newly put into operation wiring error and the electricity filching behavior of electric energy meter, thereby avoid as much as possible the generation of electric weight mistake.
Technical scheme of the present invention is: the long-range decision method of power consumer field electric energy table fault of the present invention comprises the steps:
The first step: the main website central computer receives voltage, the current parameters value of the electric energy meter of the collection of power consumer field electric energy table operational factor acquisition system and transmission in real time by telecommunication;
Second step: the main website central computer judges according to following steps whether corresponding electric energy meter produces decompression, defluidization or open phase fault by its built-in program after receiving the voltage, current parameters value of electric energy meter:
1. every phase current values of the electric energy meter that receives and the rated current of electric energy meter are compared with 0.5% product value, if certain phase current values is less than or equal to 0.5% load current value, then no-voltage fault does not occur in judgement; If certain phase current values greater than 0.5% load current value, then enters next step;
This phase voltage value that 2. will receive and the rated voltage of electric energy meter are compared with 78% product value, if this phase voltage value more than or equal to 78% load voltage value, is then judged no-voltage fault do not occur; If this phase voltage value is less than 78% load voltage value; Then enter next step;
3. this phase voltage value was judged less than the duration of 78% load voltage value, if the duration is less than or equal to 1 minute, then judged no-voltage fault does not occur; If the duration, is then judged this electric energy meter generation no-voltage fault greater than 1 minute;
4. every phase voltage value of the electric energy meter that receives and the rated voltage of electric energy meter are compared with 60% product value, if every phase voltage value all is less than or equal to 60% rated voltage, judge that then the defluidization fault does not occur electric energy meter; If every phase voltage value then enters next step all greater than 60% rated voltage;
5. every phase current values of the electric energy meter that receives and the rated current of electric energy meter are compared with 0.5% product value, if the three-phase electricity flow valuve all greater than 0.5% load current value, then the defluidization fault does not occur in judgement; If arbitrary phase or biphase current value then enter next step less than 0.5% load current value;
6. the in addition two-phase of electric energy meter or the rated current of a phase current values and electric energy meter are compared with 5% product value, if other two-phase or a phase current values are less than or equal to 5% rated current, judge that then the defluidization fault does not occur electric energy meter; If two-phase or a phase current values then enter next step greater than 5% load current value in addition;
7. electric energy meter this other two-phase or a phase current values were judged greater than the duration of 5% load current value, if the duration is less than or equal to 1 minute, then judged the defluidization fault does not occur; If the duration, is then judged this electric energy meter generation defluidization fault greater than 1 minute;
Every phase voltage value that 8. will receive and the rated voltage of electric energy meter are compared with 60% product value, if every phase voltage value all more than or equal to 60% load voltage value, judges that then open phase fault does not occur electric energy meter; If arbitrary phase voltage value less than 60% load voltage value, then enters next step;
9. this phase current values of electric energy meter and the rated current that receive are compared with 0.5% product value, if this phase current values more than or equal to 0.5% load current value, is then judged open phase fault does not occur; If this phase current values less than 0.5% load current value, then enters next step;
10. this phase current values of electric energy meter was judged less than the duration of 0.5% load current value, if the duration is less than or equal to 1 minute, then judged open phase fault does not occur; If the duration, is then judged this electric energy meter generation open phase fault greater than 1 minute.
The present invention has positive effect: (1) the present invention is by parameters such as the operating voltage of remote online Real-time Collection power consumer field electric energy table, electric currents, carry out analyzing and processing on the backstage, can in time find the relevant fault in electric energy meter table meter in service, mutual inductor, loop, newly put into operation wiring error and the electricity filching behavior of measuring apparatus, thereby can avoid to greatest extent the generation of electric weight mistake, reduce the economic loss of electric company, improve power supply enterprise's economic benefit and management modernization level.(2) measure when unusual when electric energy meter, owing to there is real time data to support, electric quantity compensating is relatively convenient.(3) adopt the long-range decision method of electrical energy meter fault of the present invention, improved greatly the promptness that electrical energy meter fault is found and processed, thereby improved the electric energy measuring management level, reduce the electric quantity compensating dispute.(4) replace traditional artificial Site Detection method of calibration, save a large amount of manpower and materials, alleviated labour intensity, improved work efficiency, be conducive to fall damage synergy, improve the economic benefit of enterprise.
Description of drawings
Fig. 1 is a kind of system architecture synoptic diagram of remote data acquisition of the present invention;
Fig. 2 is the another kind of system architecture synoptic diagram of remote data acquisition of the present invention;
Fig. 3 is the third system architecture synoptic diagram of remote data acquisition of the present invention;
Fig. 4 is the decision flowchart to the electric energy meter no-voltage fault of the present invention;
Fig. 5 is the decision flowchart to electric energy meter defluidization fault of the present invention;
Fig. 6 is the decision flowchart to the electric energy meter open phase fault of the present invention.
Embodiment
(embodiment 1)
The long-range decision method of power consumer field electric energy table fault of present embodiment mainly comprises by electric energy meter operational factor acquisition system gathering the parameter value such as voltage, electric current of electric energy meter and being transferred to the main website central computer and two key steps of main website central computer analyzing and processing.The parameters of electric energy meter collection can be taked three kinds of patterns:
See Fig. 1, the first electric energy meter operational factor acquisition system is comprised of centralized automatic meter-reading terminal and RS485 intelligent electric energy meter.In the present embodiment, the model that the centralized automatic meter-reading terminal selects Kelu Electronic Science-Technology Co., Ltd., Shenzhen to produce is the centralized automatic meter-reading terminal of DCGL14-CL195, this type centralized automatic meter-reading terminal has collection, process, the function of storage of electrical energy table data, this type centralized automatic meter-reading terminal communicates by RS-485 interface and RS485 electric energy meter, gather the also voltage of storage of electrical energy table, the data such as electric current, by the GPRS wireless public network, CDMA, the public networks such as Ethernet and main website central computer telecommunication are carried out exchanges data, with the voltage of the electric energy meter that collects, the remote datas such as electric current are transferred to the main website central computer.What of electric energy meter quantity are the quantity of centralized automatic meter-reading terminal can wait according to that actual needs is corresponding to be arranged.
See Fig. 2, the second electric energy meter operational factor acquisition system is comprised of RS485 electric energy meter, ammeter collector and concentrator take distribute-electricity transformer district as the unit.In the present embodiment, the ammeter collector of the DCZL13-HND22 model that the preferred Shenzhen Haoningda Electronic Meter Co., Ltd. of the model of ammeter collector produces; The concentrator of the DJGZ23-HND22 model that the preferred Shenzhen Haoningda Electronic Meter Co., Ltd. of the model of concentrator produces.The ammeter collector communicates by RS485 mode and RS485 electric energy meter, and then the data such as the voltage of collection RS485 electric energy meter, electric current store the data transmission that gathers by the power carrier line to concentrator.Concentrator is communicated by letter with the main website central computer by the public network such as GPRS/CDMA, and the electric energy meter remote data of storage is transferred to the main website central computer.
See Fig. 3, the third electric energy meter operational factor acquisition system is for directly adopting the GPRS intelligent electric energy meter with telecommunications functions.In the present embodiment, the intelligent electric energy meter of the DTZY188-G model that company of the preferred Ningbo Samsung Electric Co., Ltd of GPRS intelligent electric energy meter produces, this type intelligent electric energy meter are directly crossed the GPRS/CDMA public network with data communication devices such as the voltage that gathers, electric currents and are transferred to the main website central computer.
After the main website central computer receives the electric energy meter information of remote collection, automatically carry out analysis-by-synthesis by its built-in program, whether produce decompression, defluidization or open phase fault to judge corresponding electric energy meter.It is as follows with the decision method of disconnected mutually three kinds of faults to decompression, defluidization:
See Fig. 4, the decision method of electric energy meter no-voltage fault may further comprise the steps:
1. every phase current values of the electric energy meter that receives and the rated current of electric energy meter are compared with 0.5% product value, if certain phase current values is less than or equal to 0.5% load current value, then no-voltage fault does not occur in judgement; If certain phase current values greater than 0.5% load current value, then enters next step;
This phase voltage value that 2. will receive and the rated voltage of electric energy meter are compared with 78% product value, if this phase voltage value more than or equal to 78% load voltage value, is then judged no-voltage fault do not occur; If this phase voltage value is less than 78% load voltage value; Then enter next step;
3. this phase voltage value was judged less than the duration of 78% load voltage value, if the duration is less than or equal to 1 minute (min), then judged no-voltage fault does not occur; If the duration, is then judged this electric energy meter generation no-voltage fault greater than 1 minute (min).
See Fig. 5, the decision method of electric energy meter defluidization fault may further comprise the steps:
4. every phase voltage value of the electric energy meter that receives and the rated voltage of electric energy meter are compared with 60% product value, if every phase voltage value all is less than or equal to 60% rated voltage, judge that then the defluidization fault does not occur electric energy meter; If every phase voltage value then enters next step all greater than 60% rated voltage;
5. every phase current values of the electric energy meter that receives and the rated current of electric energy meter are compared with 0.5% product value, if the three-phase electricity flow valuve all greater than 0.5% load current value, then the defluidization fault does not occur in judgement; If arbitrary phase or biphase current value then enter next step less than 0.5% load current value;
6. the in addition two-phase of electric energy meter or the rated current of a phase current values and electric energy meter are compared with 5% product value, if other two-phase or a phase current values are less than or equal to 5% rated current, judge that then the defluidization fault does not occur electric energy meter; If two-phase or a phase current values then enter next step greater than 5% load current value in addition;
7. electric energy meter this other two-phase or a phase current values were judged greater than the duration of 5% load current value, if the duration is less than or equal to 1 minute (min), then judged the defluidization fault does not occur; If the duration, is then judged this electric energy meter generation defluidization fault greater than 1 minute (min).
See Fig. 6, the decision method of electric energy meter open phase fault may further comprise the steps: the judgement of disconnected phase,
Every phase voltage value that 8. will receive and the rated voltage of electric energy meter are compared with 60% product value, if every phase voltage value all more than or equal to 60% load voltage value, judges that then open phase fault does not occur electric energy meter; If arbitrary phase voltage value less than 60% load voltage value, then enters next step;
9. this phase current values of electric energy meter and the rated current that receive are compared with 0.5% product value, if this phase current values more than or equal to 0.5% load current value, is then judged open phase fault does not occur; If this phase current values less than 0.5% load current value, then enters next step;
10. this phase current values of electric energy meter was judged less than the duration of 0.5% load current value, if the duration is less than or equal to 1 minute (min), then judged open phase fault does not occur; If the duration, is then judged this electric energy meter generation open phase fault greater than 1 minute (min).
Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique is in the situation that does not break away from the spirit and scope of the present invention; can also make various conversion and obtain the corresponding technical scheme that is equal to variation, so all technical schemes that are equal to all should be included into scope of patent protection of the present invention.
Claims (1)
1. the long-range decision method of power consumer field electric energy table fault is characterized in that: comprise the steps:
The first step: the main website central computer receives voltage, the current parameters value of the electric energy meter of the collection of power consumer field electric energy table operational factor acquisition system and transmission in real time by telecommunication;
Second step: the main website central computer judges according to following steps whether corresponding electric energy meter produces decompression, defluidization or open phase fault by its built-in program after receiving the voltage, current parameters value of electric energy meter:
1. every phase current values of the electric energy meter that receives and the rated current of electric energy meter are compared with 0.5% product value, if certain phase current values is less than or equal to 0.5% load current value, then no-voltage fault does not occur in judgement; If certain phase current values greater than 0.5% load current value, then enters next step;
This phase voltage value that 2. will receive and the rated voltage of electric energy meter are compared with 78% product value, if this phase voltage value more than or equal to 78% load voltage value, is then judged no-voltage fault do not occur; If this phase voltage value is less than 78% load voltage value; Then enter next step;
3. this phase voltage value was judged less than the duration of 78% load voltage value, if the duration is less than or equal to 1 minute, then judged no-voltage fault does not occur; If the duration, is then judged this electric energy meter generation no-voltage fault greater than 1 minute;
4. every phase voltage value of the electric energy meter that receives and the rated voltage of electric energy meter are compared with 60% product value, if every phase voltage value all is less than or equal to 60% rated voltage, judge that then the defluidization fault does not occur electric energy meter; If every phase voltage value then enters next step all greater than 60% rated voltage;
5. every phase current values of the electric energy meter that receives and the rated current of electric energy meter are compared with 0.5% product value, if the three-phase electricity flow valuve all greater than 0.5% load current value, then the defluidization fault does not occur in judgement; If arbitrary phase or biphase current value then enter next step less than 0.5% load current value;
6. the in addition two-phase of electric energy meter or the rated current of a phase current values and electric energy meter are compared with 5% product value, if other two-phase or a phase current values are less than or equal to 5% rated current, judge that then the defluidization fault does not occur electric energy meter; If two-phase or a phase current values then enter next step greater than 5% load current value in addition;
7. electric energy meter this other two-phase or a phase current values were judged greater than the duration of 5% load current value, if the duration is less than or equal to 1 minute, then judged the defluidization fault does not occur; If the duration, is then judged this electric energy meter generation defluidization fault greater than 1 minute;
Every phase voltage value that 8. will receive and the rated voltage of electric energy meter are compared with 60% product value, if every phase voltage value all more than or equal to 60% load voltage value, judges that then open phase fault does not occur electric energy meter; If arbitrary phase voltage value less than 60% load voltage value, then enters next step;
9. this phase current values of electric energy meter and the rated current that receive are compared with 0.5% product value, if this phase current values more than or equal to 0.5% load current value, is then judged open phase fault does not occur; If this phase current values less than 0.5% load current value, then enters next step;
10. this phase current values of electric energy meter was judged less than the duration of 0.5% load current value, if the duration is less than or equal to 1 minute, then judged open phase fault does not occur; If the duration, is then judged this electric energy meter generation open phase fault greater than 1 minute.
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| CN105548949A (en) * | 2016-01-29 | 2016-05-04 | 张波 | Method and system for fault remote determination of intelligent ammeter |
| CN105631762A (en) * | 2015-12-25 | 2016-06-01 | 长沙威胜信息技术有限公司 | Electric power retrieving method based on load curve |
| CN106054108A (en) * | 2016-05-27 | 2016-10-26 | 北京智芯微电子科技有限公司 | Electricity utilization anomaly detection method and electricity utilization anomaly detection device |
| CN106338709A (en) * | 2016-08-31 | 2017-01-18 | 浙江恒业电子有限公司 | Intelligent meter system based on embedded platform |
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| CN111965585A (en) * | 2020-08-11 | 2020-11-20 | 云南电网有限责任公司电力科学研究院 | Electric energy meter abnormity judgment method |
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| CN105631762B (en) * | 2015-12-25 | 2019-10-15 | 长沙威胜信息技术有限公司 | Electric quantity compensating method based on load curve |
| CN105548949B (en) * | 2016-01-29 | 2016-10-26 | 国家电网公司 | The fault remote determination methods of a kind of intelligent electric energy meter and system thereof |
| CN105548949A (en) * | 2016-01-29 | 2016-05-04 | 张波 | Method and system for fault remote determination of intelligent ammeter |
| CN106054108A (en) * | 2016-05-27 | 2016-10-26 | 北京智芯微电子科技有限公司 | Electricity utilization anomaly detection method and electricity utilization anomaly detection device |
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| CN106405227A (en) * | 2016-08-31 | 2017-02-15 | 浙江恒业电子有限公司 | Intelligent electric meter system for carrying out real-time error compensation based on proportional simulation |
| CN106405476A (en) * | 2016-09-28 | 2017-02-15 | 国家电网公司 | Electric energy meter monitoring and analysis method and system utilizing mobile terminal |
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| CN109193563A (en) * | 2018-09-18 | 2019-01-11 | 深圳供电局有限公司 | Defluidization fault monitoring method and device based on phase three-wire three meter equipment |
| CN109193563B (en) * | 2018-09-18 | 2020-09-11 | 深圳供电局有限公司 | Current loss fault monitoring method and device based on three-phase three-wire meter equipment |
| CN109212451A (en) * | 2018-09-26 | 2019-01-15 | 深圳供电局有限公司 | No-voltage fault monitoring method and device based on three-phase and four-line meter equipment |
| CN109375145A (en) * | 2018-09-26 | 2019-02-22 | 深圳供电局有限公司 | No-voltage fault monitoring method and device based on phase three-wire three meter equipment |
| CN109212451B (en) * | 2018-09-26 | 2021-06-25 | 深圳供电局有限公司 | Voltage loss fault monitoring method and device based on three-phase four-wire meter measuring equipment |
| CN109946640A (en) * | 2019-04-11 | 2019-06-28 | 广东电网有限责任公司 | Special transformer terminals decompression defluidization judgment method based on metering automation system data |
| CN111965585A (en) * | 2020-08-11 | 2020-11-20 | 云南电网有限责任公司电力科学研究院 | Electric energy meter abnormity judgment method |
| CN113009405A (en) * | 2021-01-28 | 2021-06-22 | 国网河北省电力有限公司沧州供电分公司 | Three-phase power detection system and electronic equipment |
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Application publication date: 20130213 |